Fill in the Blanks INGLESOnline version COMPLETE THE TEXT by Reyna Gonzalez 1 To be successful in forming the superlative in English , point out these rules ! : The is always preceded by the determined article : the fastest , the tallest , the most intelligent . In the case of one - adjectives , we form the superlative by - est at the end : tall - - - tallest . If the has two syllables , we can add - est or put more in front of the adjective . In many cases both forms are used , but one is common than the other . If the adjective has three syllables or more , we will form the by adding most : - - - the important . When the adjective ends in a consonant + vowel + , the last must be repeated before adding the : fat - - - fattest . And if it ends in - y , we should change it to an i : happy - - - happiest .